Fix artist excerpt with wildcard searches

app/logical/post_sets/post.rb

@@ -31,11 +31,11 @@ module PostSets
     end
 
     def has_artist?
-      tag_array.any? && ::Artist.name_matches(tag_string).active.exists?
+      tag_array.any? && ::Artist.named(tag_string).active.exists?
     end
 
     def artist
-      ::Artist.name_matches(tag_string).active.first
+      ::Artist.named(tag_string).active.first
     end
 
     def pool_name

app/models/artist.rb

@@ -248,6 +248,10 @@ class Artist < ActiveRecord::Base
       where("name LIKE ? ESCAPE E'\\\\'", stripped_name)
     end
 
+    def named(name)
+      where("name = ?", normalize_name(name))
+    end
+
     def any_name_matches(name)
       stripped_name = normalize_name(name).to_escaped_for_sql_like
       if name =~ /\*/ && CurrentUser.user.is_builder?